1. Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University Graz, Graz, Austria
2. Clinical Division of Neurogeriatrics, Department of Neurology, Medical University of Graz, Austria
3. Institute for Medical Informatics, Statistics and Documentation, Medical University of Graz, Austria
4. Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
5. Department of Neurology, Medical University of Vienna, Vienna, Austria
6. Department of Neurology 2, Med Campus III, Faculty of Medicine, Johannes Kepler University, Kepler University Hospital, Linz, Austria